I'm having the same recurring issues with my slingbox and need to get it resolved. a when I login from abroad, my slingbox 500 says its commented, however I just see a black screen without any sound on the slinag player. It's currently setup to use HDMI input. From here, I must then go to settings, click Configure Input, and start to configure another input. I let it try to comment, then click back on the HDMI configuration. Once it's configured back to HDMI then the sound and video pops up and it works fine. I know it works, but I have to go through this annoying process every time to try to watch, In addition, every time I have to reconfigure, it kicks the user who's watching the TV at home off. any ideas on how to fix this so I don't have to take the extra few steps every time I login?

I just bought a refurbished M1 and that works fine. I also have 1 Slingbox in Europe (500), 3 in the US (1 PRO, 2 350) that all give me "reconfigure" when connecting from computer, but no problem from Iphone or Ipad.